大跨度矮墩连续刚构桥施工监控技术研究  

Research on Construction Monitoring Technology for Large-span Short Pier Continuous Rigid Frame Bridge

作　　者：徐丽海 肖光清 陈汐龙 曾亮 

机构地区：[1]广州广检建设工程检测中心有限公司,广东广州510405

出　　处：《混凝土世界》2024年第3期54-59,共6页China Concrete

摘　　要：本文以某大跨度连续刚构桥的实际施工为例,介绍了施工监控原则和方法,运用MidasCivil建立了施工全过程的仿真计算模型,分析了悬臂施工在各工况下结构的线形和内力,对比分析了现场实测值和理论计算值。结果表明:悬臂施工的现场实测值和理论计算值的变化趋势一致;桥梁线形平顺,结构内力可控,各项指标均满足JTG/T3650-01—2022《公路桥梁施工监控技术规程》和设计要求,实现了对主梁线形、主梁轴线偏位、主梁应力等多元目标的合理控制,施工监控效果良好。This article takes the actual construction of a large-span continuous rigid frame bridge as an example,introduces the principles and methods of construction monitoring,establishes a simulation calculation model of the entire construction processby using Midas Civil,analyzes the structural linearity and internal forces of cantilever construction under various working conditions,and comparative analyzes the on-site measured values and theoretical calculated values.The results show that the variation trend of on-site measured values and theoretical calculated values during cantilever construction is consistent;the bridge has a smooth shape,controllable internal forces,and all indicators meet the specifications and design requirements.It has achieved reasonable control of multiple objectives such as the main beam shape,main beam axis deviation,and main beam stress.The construction monitoring effect is good.

关 键 词：大跨连续刚构桥 施工监控 仿真计算 线形 结构应力 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]